Air filter



arl Z0, 1934., G w wlLDE DUPLEX ENVELOPE Filed March 18, 1935 F, 0 d VQ .5 M

March 20, l934.

W. A. WOOD AIR' FILTER Filed March 1e. 1932 2 Sheeis-Sheet l 'I lNVawoR.

#Va/fer ,4 Wood A TTORNE Y S 

